In a row of 21 girls, when Monika was shifted by four place towards the right, she became 12th from the left end. What was her earlier positions from the right end of the row?

Three numbers in which followed by 9 and preceded 2, 3 or 4
11 [2 3 9] 4 4 5 5 5 5 [3 3 9] 8 7 7 7 8 8 8 5 5 [4 3 9] 6 6 6 6

Clearly 1st, 8th, 15th, 22nd and 29th October are Sundays.
So, 31st October is Tuesday.
? 1st November will be Wednesday.

As per the given above figure , we can see that
The number of routes from P to Q = 2 + 4 = 6
Hence , the number of routes from P to Q is 6 .

From the above result length of route -2 = 11 km
Therefore , the length of route -2 is 11 km .

As per the above result ,
Route -1 :- 5 + AB = 13 ? AB = 13 - 5 = 8 km
Hence , required distance between A and B is 8 km .

Two 9 are present which is followed by 7 and preceded by either 4 or 5.
2 3 7 8 9 1 [4 9 7] 3 6 9 8 1 5 3 [5 9 7]

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----A----
DEA - -
[It is not possible as D is not at the top.]
--- AED
BCAED Hence, C is second among them.

Mohan has secured more marks than Suresh in the terminal examination. Suresh's rank is seventh from top among.
According to question,
Mohan rank will definitely better than Suresh which can be either 1, 2, 3, 4, 5, 6.

As month begins on Saturday, so 2nd, 9th, 16th, 23rd, 30th days will be Sundays. While 8th and 22nd days are second Saturdays. Thus, there are 7 holidays in all. Hence, no. of working days = 30 - 7 = 23

Clearly, the last train left two and half hours before 18.00 hrs i.e., at 15.30 hrs. But this happened 40 minutes before the announcement made. So, the announcement made at 16.10 hrs.